Altcoin Dominance Rises, Is It the Start of Altseason in the Crypto Market?

Crypto News - Posted on 17 September 2025 Reading time 5 minutes

Altcoin Dominance Strengthens, Clearer Signals of a Market Shift in Crypto

The cryptocurrency market recorded a significant change in today’s trading session. Altcoin dominance over Bitcoin has continued to strengthen, fueling speculation that major investors are beginning to reallocate part of their capital into alternative assets perceived to hold higher growth potential.

 

Shifts in Market Dominance

Bitcoin Dominance (BTC.D) the measure of the percentage of the crypto market capitalization controlled by Bitcoin has reportedly fallen to the 57.5–58% range. This marks a sharp decline from the peak levels of 65 - 66% recorded a few months ago.

The drop has also broken below the two-year trendline that previously supported Bitcoin’s macro dominance. This condition opens wider opportunities for altcoins to expand their market share.

In line with this, the Altcoin Season Index has been recorded at 71, nearing the threshold that is often used as a benchmark for the official start of altseason.

 

Driving Factors

Capital rotation from Bitcoin into altcoins is becoming increasingly evident, supported by rising on-chain activity in several major altcoins such as Ethereum, Solana, and XRP.

Data from the derivatives market further reinforces this trend. Altcoin open interest reflects more positive positioning, while Bitcoin positions remain neutral or slightly weaker.

In addition, institutional investors and “smart money” have become more active in targeting altcoins with clear utility, high liquidity, and strong protocol project support.

 

Challenges Ahead

Although Bitcoin’s dominance has weakened, the current level is not considered extreme. This means Bitcoin still has the potential to reclaim market share if negative sentiment emerges toward altcoins, or if external factors such as regulation, global liquidity conditions, and interest rate policies shift dramatically.

On the other hand, several altcoins still face technical and psychological resistance in sustaining their price levels after recent gains. Volatility remains the primary risk overshadowing investors.

 

Toward Altseason?

Based on the latest data, altcoin dominance is indeed showing consistent strength, marking a new phase in which market attention is beginning to shift from Bitcoin to alternative cryptocurrencies. However, although the signals toward altseason are becoming increasingly clear, there is still no certainty that the phase has officially begun. Investors are advised to remain cautious, closely monitor market developments, and carefully assess risks before taking further strategic steps.

 

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